Parse complicated HTML table to 2D array with Java 8 [closed]

Question

Closed. This question needs details or clarity. It is not currently accepting answers.

Want to improve this question? As written, this question is lacking some of the information it needs to be answered. If the author adds details in comments, consider editing them into the question. Once there's sufficient detail to answer, vote to reopen the question.

Closed last year.

Improve this question

I need to parse an HTML table. Some TD tags use both rowspan and colspan.

I referenced Extract data from complex HTML tables to 2d array in Java, but it causes IndexOutOfBoundsException Linked Answer's code like row.add(idx, rowspan - 1 == 0 ? (Element) td.removeAttr("rowspan") : td.attr("rowspan", String.valueOf(rowspan - 1)));

Any idea for both user rowspan, colspan to parse 2d array?

<table border="1">
  <tr>
    <td rowspan="3" colspan="2">head1</td>
    <td rowspan="2" colspan="2">head2</td>
    <td colspan="6">head3</td>
  </tr>
  <tr>
    <td colspan="2">head3-1</td>
    <td colspan="2">head3-2</td>
    <td colspan="2">head3-3</td>
  </tr>
  <tr>
    <td>sub_header1</td>
    <td>sub_header2</td>
    <td>sub_header3</td>
    <td>sub_header4</td>
    <td>sub_header5</td>
    <td>sub_header6</td>
    <td>sub_header7</td>
    <td>sub_header8</td>
  </tr>
  <tr>
    <td>content1</td>    
    <td>content2</td>    
    <td>content3</td>    
    <td>content4</td>    
    <td>content5</td>    
    <td>content6</td>    
    <td>content7</td>    
    <td>content8</td>    
    <td>content9</td>    
    <td>content10</td>
  </tr>
</table>

@mplungjan no, my question is parse complex table to list

Noobgrammer
– Noobgrammer

2024-02-07 07:03:19 +00:00
Commented Feb 7, 2024 at 7:03 — Noobgrammer
– Noobgrammer, Commented Feb 7, 2024 at 7:03

mplungjan · Accepted Answer · 2024-02-07 07:03:59Z

0

If you get index out of bounds, you need to handle that the row list size might not always match the index at which you're attempting to insert the modified td element.

For example previous rows might have fewer cells (due to colspan or lack of rowspan usage) resulting in you adding elements to the list at an index that might exceed the list's current size.

You can test and fill:

if (idx < row.size()) {
  row.set(idx, rowspan - 1 == 0 ? td.removeAttr("rowspan") : td.attr("rowspan", String.valueOf(rowspan - 1)));
} else {
  // You can append null or a placeholder element up to idx if you want to preserve the layout.
  while (row.size() < idx) {
    row.add(null); 
  }
  row.add(rowspan - 1 == 0 ? td.removeAttr("rowspan") : td.attr("rowspan", String.valueOf(rowspan - 1)));
}

answered Feb 7, 2024 at 7:03

mplungjan

180k29 gold badges183 silver badges246 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Parse complicated HTML table to 2D array with Java 8 [closed]

1 Answer 1

Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Linked

Related